A spring game, aka a practice. On the other side, we don't know what we have in a TE. Just because a guy looked good one day in practice doesn't mean he will be all world.
Now what we do know is we have a QB who can make throws, plays aggressive, has made big plays and looks the part. We know that because he played almost an entire season of REAL games. But you go ahead and base your concern and worry off a spring game, and a rain soaked bowl game.